A short stock position may originate from an option position which you held in your account. For example, if you hold a long put position in your account, that position may be subject to automatic exercise by the clearinghouse if it is in-the-money by a defined threshold at expiration. This put exercise will generate a short stock position in your account (assuming you do not have an offsetting long position), and you are obligated to pay any dividends should you maintain a short stock position on the ex-dividend date.
Similarly, a short call position in your account is subject to assignment should a call purchaser elect to exercise their right to purchase the stock and your account be allocated through the random clearinghouse and broker assignment process. This call assignment will generate a short stock position in your account (assuming you do not have an offsetting long position), and you are obligated to pay any dividends should you maintain a short stock position on the ex-dividend date.
These payments will be reflected on your Activity Statement as a 'Payment In Lieu Of Dividend'.
A Payment in Lieu, or Pil, typically refers to a cash debit or credit made to an account in recognition of a stock dividend. A Pil in the form of a debit will be made when an account is holding a short position in a stock on its ex-dividend date. This debit occurs as the lender of the shares which facilitated the short sale remains entitled to all dividends paid throughout the duration of the loan period.
Conversely, a Pil in the form of a credit is made when a long stock position in an account has been loaned out on its ex-dividend date. Account holders should note that shares which are held long and which are the subject of a margin lien may be eligible to be loaned by the broker. In this situation the credit originates from payment by the borrower of the shares rather than from a dividend by the share issuer. U.S. taxpayers who are recipients of Pil credits should discuss the tax implications of Pils and non-qualified dividends with their tax adviser.